/**
 * @Description  :
 * @Author       : Azure-Tang, Boxin Zhang
 * @Date         : 2024-07-25 13:38:30
 * @Version      : 0.2.2
 * @Copyright (c) 2024 by KVCache.AI, All Rights Reserved.
 **/

#include "custom_gguf/ops.h"
#ifdef KTRANSFORMERS_USE_CUDA
#include "gptq_marlin/ops.h"
#include "moe/ops.h"
#endif
// Python bindings
#include <pybind11/pybind11.h>
#include <pybind11/stl.h>
#include <torch/extension.h>
#include <torch/library.h>
#include <torch/torch.h>
// namespace py = pybind11;

PYBIND11_MODULE(KTransformersOps, m) {
  m.def(
      "dequantize_q8_0",
      [](const intptr_t data, int num_bytes, int blk_size, const int ele_per_blk, torch::Device device,
         py::object target_dtype) {
        torch::Dtype dtype = torch::python::detail::py_object_to_dtype(target_dtype);
        return dequantize_q8_0((int8_t*)data, num_bytes, blk_size, ele_per_blk, device, dtype);
      },
      "Function to dequantize q8_0 data.", py::arg("data"), py::arg("num_bytes"), py::arg("blk_size"),
      py::arg("ele_per_blk"), py::arg("device"), py::arg("target_dtype"));

  m.def(
      "dequantize_q6_k",
      [](const intptr_t data, int num_bytes, int blk_size, const int ele_per_blk, torch::Device device,
         py::object target_dtype) {
        torch::Dtype dtype = torch::python::detail::py_object_to_dtype(target_dtype);
        return dequantize_q6_k((int8_t*)data, num_bytes, blk_size, ele_per_blk, device, dtype);
      },
      "Function to dequantize q6_k data.", py::arg("data"), py::arg("num_bytes"), py::arg("blk_size"),
      py::arg("ele_per_blk"), py::arg("device"), py::arg("target_dtype"));

  m.def(
      "dequantize_q5_k",
      [](const intptr_t data, int num_bytes, int blk_size, const int ele_per_blk, torch::Device device,
         py::object target_dtype) {
        torch::Dtype dtype = torch::python::detail::py_object_to_dtype(target_dtype);
        return dequantize_q5_k((int8_t*)data, num_bytes, blk_size, ele_per_blk, device, dtype);
      },
      "Function to dequantize q5_k data.", py::arg("data"), py::arg("num_bytes"), py::arg("blk_size"),
      py::arg("ele_per_blk"), py::arg("device"), py::arg("target_dtype"));

  m.def(
      "dequantize_q4_k",
      [](const intptr_t data, int num_bytes, int blk_size, const int ele_per_blk, torch::Device device,
         py::object target_dtype) {
        torch::Dtype dtype = torch::python::detail::py_object_to_dtype(target_dtype);
        return dequantize_q4_k((int8_t*)data, num_bytes, blk_size, ele_per_blk, device, dtype);
      },
      "Function to dequantize q4_k data.", py::arg("data"), py::arg("num_bytes"), py::arg("blk_size"),
      py::arg("ele_per_blk"), py::arg("device"), py::arg("target_dtype"));

  m.def(
      "dequantize_q3_k",
      [](const intptr_t data, int num_bytes, int blk_size, const int ele_per_blk, torch::Device device,
         py::object target_dtype) {
        torch::Dtype dtype = torch::python::detail::py_object_to_dtype(target_dtype);
        return dequantize_q3_k((int8_t*)data, num_bytes, blk_size, ele_per_blk, device, dtype);
      },
      "Function to dequantize q3_k data.", py::arg("data"), py::arg("num_bytes"), py::arg("blk_size"),
      py::arg("ele_per_blk"), py::arg("device"), py::arg("target_dtype"));

  m.def(
      "dequantize_q2_k",
      [](const intptr_t data, int num_bytes, int blk_size, const int ele_per_blk, torch::Device device,
         py::object target_dtype) {
        torch::Dtype dtype = torch::python::detail::py_object_to_dtype(target_dtype);
        return dequantize_q2_k((int8_t*)data, num_bytes, blk_size, ele_per_blk, device, dtype);
      },
      "Function to dequantize q2_k data.", py::arg("data"), py::arg("num_bytes"), py::arg("blk_size"),
      py::arg("ele_per_blk"), py::arg("device"), py::arg("target_dtype"));

  m.def(
      "dequantize_iq4_xs",
      [](const intptr_t data, int num_bytes, int blk_size, const int ele_per_blk, torch::Device device,
         py::object target_dtype) {
        torch::Dtype dtype = torch::python::detail::py_object_to_dtype(target_dtype);
        return dequantize_iq4_xs((int8_t*)data, num_bytes, blk_size, ele_per_blk, device, dtype);
      },
      "Function to dequantize iq4_xs data.", py::arg("data"), py::arg("num_bytes"), py::arg("blk_size"),
      py::arg("ele_per_blk"), py::arg("device"), py::arg("target_dtype"));

#ifdef KTRANSFORMERS_USE_CUDA
  m.def("gptq_marlin_gemm", &gptq_marlin_gemm, "Function to perform GEMM using Marlin quantization.", py::arg("a"),
        py::arg("b_q_weight"), py::arg("b_scales"), py::arg("g_idx"), py::arg("perm"), py::arg("workspace"),
        py::arg("num_bits"), py::arg("size_m"), py::arg("size_n"), py::arg("size_k"), py::arg("is_k_full"));
  m.def("topk_softmax", &topk_softmax, "Function to perform topk_softmax.", py::arg("topk_weights"),
        py::arg("topk_indices"), py::arg("token_expert_indices"), py::arg("gating_output"));
#endif
}
